Finding the Fourth Proportional to 118,903.50, 164,087.55 and 65,188.62

Step by Step Solution

1. Step 1: Write the proportion equation
   118,903.50 : 164,087.55 = 65,188.62 : x
2. Step 2: Convert to fraction form
   118,903.50/164,087.55 = 65,188.62/x
3. Step 3: Cross multiply
   118,903.50x = 164,087.55 × 65,188.62
4. Step 4: Simplify right side
   118,903.50x = 10,696,640,943.68
5. Step 5: Solve for x
   x = 10,696,640,943.68/118,903.50
6. Step 6: Final answer
   x = 89,960.69